Device for sharpening skates



(N0 ModeL) 0. P. KNOWLES 8: H. H. MILLER.

DEVICE FOR SHARPENING SKATES.

Patented Jan. 9, 1894.

zwmiszs W 637K UN TED STATES PATENT FFIGE.

OTIS F. KNOWLES AND HENRY H. MILLER, OF OXFORD, MICHIGAN.

DEVICE FOR SHARPENING SKATES.

SPECIFICATION forming part of Letters Patent No. 512,382, dated January9, 1894..

Application filed October 5, 1892. Serial No. 447,970. (No model.)

To all whom it may concern.-

Be it known that we, OTIS F. KNOWLES and HENRY H. MILLER, citizens ofthe United States, residing at Oxford, in the county of Oakland, Stateof Michigan, have invented certain new and useful Improvements inSkate-Sharpening Devices; and we do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to new and useful improvements inskate-sharpening devices, and consists in the construction andarrangement of parts as hereinafter fully set forth, the essentialfeatures being pointed out particularly in the claim.

The object of the invention is to produce an instrument for sharpeningskates, that shall be simple, cheap and convenient to carry, and inwhich the arrangement is such that in the operation of sharpening, thecutting file is held perfectly flat upon the blade of the skate, therebyobviating the beveling or rounding of the edges of said blade. Thisobject is attained by the device illustrated in the accompanyingdrawings,'in which- Figure 1 is a perspective view of the completedevice. Fig. 2 is an enlarged perspective view showing the partsseparated. Fig. 3 is a view in elevation showing one of the sidesremoved. Fig. 4 is a'central transverse section through the device.

Referring to the letters of reference, A designates one of the sideplates of the file-containing case, and which forms the body portionthereo B designates the other side plate forming the complementaryportion of said case, and which is attached to plate A by means of ascrew a passing through plate B and screwing into a boss I) on the innerface of plate A, whereby said plates may be bound tightly together, toform the complete 'case, as shown in Figs. 1 and 4. The sides of theplates swell outward and are rounding so as to afford a firm grasp inmanipulating the device. The end portions of the plate A are providedwith the inwardly extending ledges c that support the ends of thefile-blade D which lies upon said ledges and abuts against the shoulderse. Extending from the edges of the side plates of the case are theflanges O and O respectively. Said flanges stand approximately parallelwhen said plates are secured together, and form a way E between theiradjacent faces, adapted to freely receive the blade of the skate. Theflanges of said way, extending on each side of the skate-blade, guidethe sharpener, so that the file D is always held square with the surfaceof said blade.

On referring to Fig. 4, it will be seen that the file D is slightlywider than the ledges 0 so that the plate B may be drawn tightly againstit by means of the screw (1. to retain it securely in placef To morefirmly secure the plates together, the plate B is provided on its inneredge with the extending lugs 0 that engage the inner edge of the plate Aand more securely couple said plates.

In the application of this device, the skate may be held in the hand,and the sharpener applied to the blade thereof, in the manner of anordinary file; the way in the sharpener that receives the blade of theskate, directs the file squarely thereto, and enables an unskilledperson to properly and easily sharpen the skates; in fact, so perfect isthe operation of this device, that the skates may be readily sharpenedwithout removing them from the feet, if desired.

Having thus fully set forth our invention,

what we claim as new, and desire to secure by Letters Patent, is-

In a skate-sharpener, the combination of the concavo convex plates A, B,forming a closed oblong case, said plates having each an extendedflange, so disposed as to stand approximately parallel forming a waybetween their adjacent faces, the plate A having at each end an integralledge that extends laterally into said way, and with a shoulder at theouter extremity of said ledges rising above the plain thereof, saidplate also having the In testimony whereof we affix our signatapp'edboss projectifng from the tilnner face, tures in the presence of twowitnesses. the thin fi e blade 0 greater widt than said ledges supportedthereon in said way and 5 abutting against said shoulders, and the screwpassing through plate B and screwing into Witnesses: the boss of plateA, to bind said plates together JOHN G. SUTHERLAND, and clamp said bladebetween their faces. L. O. BALDWIN.

